Improvement in bran-dusters



Jay. 1. mmm AUG 15 1871 f MED STATES PATENT OFFICE.

JOHN DAME, or AsHLAND, OHIO.

IMPROVEMENT IN BRAN-DusurERs. nu

To all 'whom it may concern:

Be it known that I, JOHN DAMP, of Ashland, in the county of Ashland and State of Ohio, have invented a new and Improved Middlings and Bran-Duster; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference be ing had to the accompanying drawing forming part of this specification.

This invention relates to improvements in middliilgs-separators and bran-dusters, and it consists in a combination, with the wire-cloth cylinder and brushes, of a suction-fan, arrangedior separating the iine particles of fuss from the middlings or bran. M

Figure l is a sectional elevation of my improved (luster taken on the line a' a; of Fig. 2. Fig. 2 is a transversesection on the line y y of Fig. l. Fig. 3 is an end elevation, and Fig. 4 is a horizontal section of the fan.

Similar letters of reference indicate corresponding parts.

A is the wire-gauze cylinder, arranged in a suitable frame, B, between the two heads C and l) which have a larv'e oienin at the center- 011e, E, for the admission ot' air, and the other, F,

for the air to escape, together with the fine particles of dust. G represents the brushes, mounted on the radial arms ofthe shaft H, extending beyond the head at each end, and mounted in the adjustable bearings I. The arms Kof this shaft are intended to be made adjustable lengthwise to regulate the pressure of the brushes on the wire-cloth. The shaft is rotated by a band on the pulley L, and carries a fan, M, in a fan-case, N, attached to thehead D, and provided with a discharge-spout, 0. This :fa-n draws the air through the wire cylinder, taking the iine particles which do not need grinding again with it, and leaving' the coarse particles to escape through the meshes to the hopper P below in a better condition for grinding than when mixed with the ine particles. The suction may also be applied to fan-clusters, either at the end for taking the fine particles through the escape-hole F, the bran being discharged through another spout at the end ofthe cylinder, while the coarse particles pass through the same, or the fan may be applied to the spout from the hopper P to draw the ne particles through the wire cylinder and leave the bran to escape at the end. Q is a heavy bolt or rod arranged in the end of the case to be forced in by a spring, R, acting on a lever, S, to strike the end ofthe wire screen and keep it from clogging. It is drawn out by arms T on the shaft acting on the lever, as clearly shown in Fig. 4.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- In combination with the wire-gauze cylinderA, shaft H having adjustable arms K, and brushes G, the suction-fan M, constructed and arranged as and for the purpose specified.

JOHN DAMP.

Witnesses:

GEO. B. SMITH, J. N. SMITH. 

